Merge Adjacent Cells With Criteria

I need a code or macro which, when applied to a selected column, will merge a range of cells in that column into one cell. The criteria is to merge all cells into one cell that fall directly under the cell which contains "Items - total..." and that lines are separated by a line break (alt+enter).

Here's an example of what the column contains:

Before code:

A1: Items - total: 2
A2: four-legged
A3: cat
A4: two-legged
A5: chicken
A6: Items - total: 1
A7: four-legged
A8: dog
A9: Items - total: 3
A10: four-legged
A11: pig
A12: two-legged
A13: eagle
A14: marine animal
A15: shark

After code:

A1: Items - total: 2
four-legged
cat
two-legged
chicken

[Code] .......